Precipitation during the wettest quarter 0.242607
Compound topographic index (relative wetness) 0.419813
Nitrogen content of soil 0.469544
Precipitation during the driest quarter 0.547409
Temperature during the hottest quarter 0.625976
Day/night diurnal temperature difference 0.634039
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.723685
Available water holding capacity of soil 1.07499
Carbon content of soil 1.14696
Precipitation during the hottest quarter 1.37919
Elevation 1.44672
Ratio of precipitation to potential evapotranspiration 1.51462
Precipitation during the coldest quarter 1.53325
Solar interception 1.80574
Bulk density of soil 2.05317
Sum of monthly Tavg where Tavg >=5 deg C 2.21663
Temperature during the coldest quarter 5.85498